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General Machinery
Serving Industry Since 1908

April Newsletter: All About Pumps

GENERAL MACHINERY is an authorized provider and a stocking industrial distributor for Grundfos, Chicago, Yoemans, Paco, and Peerless branded products, and is a factory authorized service provider having passed the ASP audit. This designation and recertification is valid for the entire state of Alabama and Northwest Florida for all of the Grundfos’ family of products.


The pump casing material is a minimum of class 30 cast iron. The bearing bracket supports are cast integral with the lower casing half for permanent alignment of bearings and all rotating parts. Bronze, renewable casing rings are doweled and shouldered in the casing.

Cast bronze, one-piece impeller is hydraulically and dynamically balanced for vibration-free performance and longer bearing life. The impeller is keyed to the shaft for positive driving. Bronze impeller wear rings are securely fastened to the impeller and machined to close tolerances to permit minimum re-circulation of pumped liquid.

Stuffing boxes can accommodate several mechanical seal types and a variety of API seal flush plans. The gland bolts are swing type and made of steel with 18-8 stainless steel nuts. Stuffing boxes are designed to hold a minimum of five rings of packing with a lantern ring. Split glands facilitate removal for re-packing.

Replaceable bronze or optional hardened 416 stainless steel shaft sleeves protect the carbon steel or optional heat-treated stainless steel shaft through the stuffing box. The shaft sleeves extend beyond the mechanical seal or packing glands for maximum shaft protection. Sleeves are sealed by O-rings. Grease-lubricated ball bearings are designed for an average life of 100,000 hours. Inboard bearings are single row, radial ball bearings. Outboard bearings are duplex angular contact ball bearings. (optional oil lubricated).

The pump and driver are mounted on a common steel base (optional drip rim), coupled by a flexible coupling and furnished with a coupling guard. Pump and driver are aligned and bolted in place prior to factory shipment.

To learn more, click here.


Envie3 high efficiency air-filled motors are engineered without application limitations. Designed to run both submerged and dry run, envie3 motors are available with Deming’ chopper and non-clog pumps.

921 First Avenue North
Birmingham, AL 35203
P) 205-251-9243
F) 205-252-9723

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